<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
      <!-- <el-breadcrumb-item>活动详情</el-breadcrumb-item> -->
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <el-alert
        center
        show-icon
        title="添加商品信息"
        :closable="false"
        type="info"
      >
      </el-alert>
      <!-- 步骤条区域 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        align-center
        finish-status="success"
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        label-position="top"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        class="demo-ruleForm"
      >
        <!-- tab栏区域 -->
        <el-tabs
          tab-position="left"
          @tab-click="tabClicked"
          :before-leave="beforeTabLeave"
          v-model="activeIndex"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" type="number" prop="goods_price">
              <el-input v-model="addForm.goods_price"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" type="number" prop="goods_weight">
              <el-input v-model="addForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  :key="i"
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              :key="item.attr_id"
              v-for="item in onlyTableData"
            >
              <el-input v-model="item.attr_vals" placeholder=""></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :headers="headerObj"
              class="upload-demo"
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">
                只能上传jpg/png文件，且不超过500kb
              </div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- <input type="text"> -->
            <el-input
              v-model="addForm.goods_introduce"
              placeholder=""
            ></el-input>
            <!-- <el-input v-model="" placeholder=""></el-input> -->
            <el-button type="primary" @click="add">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览 -->
    <el-dialog
      title="图片预览"
      :visible.sync="preViewlogVisible"
      width="30%"
      :before-close="handleClose"
    >
      <img :src="previewPath" alt="" class="preimg" />
    </el-dialog>
  </div>
</template>

<script>
export default {
  created() {
    this.getCateList();
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status != 200) {
        return this.$message.error("获取分类数据失败");
      }
      this.catelist = res.data;
    },
    // 选择器变化会触发
    handleChange() {
      console.log(this.addForm.goods_cat);
      if (this.addForm.goods_cat.length != 3) {
        this.addForm.goods_cat = [];
      }
    },
    beforeTabLeave(newname, oldname) {
      // console.log(newname);
      // console.log(oldname);
      if (oldname == "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请先选择三级分类");
        return false;
      }
    },
    async tabClicked() {
      // console.log('test');
      // 说明是动态参数面板
      if (this.activeIndex == "1") {
        const { data: res } = await this.$http.get(
          "categories/ " + this.cateId + "/attributes",
          {
            params: { sel: "many" },
          }
        );
        if (res.meta.status != 200) {
          return this.$message.error("获取参数列表失败");
        }
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ");
        });
        this.manyTableData = res.data;
      }
      //   静态属性面板
      else if (this.activeIndex == "2") {
        const { data: res } = await this.$http.get(
          "categories/ " + this.cateId + "/attributes",
          {
            params: { sel: "only" },
          }
        );
        if (res.meta.status != 200) {
          return this.$message.error("获取静态属性列表失败");
        }
        this.onlyTableData = res.data;
      }
    },
    // 处理图片预览效果
    handlePreview(file) {
      console.log(file);
      this.previewPath = file.response.data.url;
      this.preViewlogVisible = true;
    },
    // 处理移除图片
    handleRemove(file) {
      console.log(file);
      const filePath = file.response.data.tmp_path;
      const i = this.addForm.pics.findIndex((x) => {
        x.pic === filePath;
      });
      this.addForm.pics.splice(i, 1);
    },
    // 监听图片上传成功的事件
    handleSuccess(response) {
      console.log(response);
      const picInfo = { pic: response.data.tmp_path };
      this.addForm.pics.push(picInfo);
    },
    async add() {
      this.$refs.addFormRef.validate((vali) => {
        if (!vali) {
          return this.$message.error("请填写必要的表单项");
        }
      });
      const form = JSON.parse(JSON.stringify(this.addForm));
      form.goods_cat = form.goods_cat.join(",");
      // console.log(this.addForm);
      this.manyTableData.forEach((item) => {
        const newInfo = {
          attr_id: item.attr_id,
          attr_value: item.attr_vals.join(" "),
        };
        this.addForm.attrs.push(newInfo);
      });
      // 处理静态属性
      this.onlyTableData.forEach((item) => {
        const newInfo = {
          attr_id: item.attr_id,
          attr_value: item.attr_vals,
        };
        this.addForm.attrs.push(newInfo);
      });
      form.attrs = this.addForm.attrs;
      const { data: res } = await this.$http.post("goods", form);
      if (res.meta.status != 201) {
        return this.$message.error("添加商品失败");
      }
      this.$message.success("添加商品成功！");
      this.$router.push("/goods");
    },
  },
  data() {
    return {
      activeIndex: "0",
      addForm: {
        goods_name: 0,
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 商品所属的分类和数组
        goods_cat: [],
        // 图片的数组
        pics: [],
        // 商品的详情介绍
        goods_introduce: "",
        attrs: [],
      },

      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请选择商品分类", trigger: "blur" },
        ],
      },
      catelist: [],
      cateProps: {
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },
      //   动态参数列表
      manyTableData: [],
      // 静态参数列表
      onlyTableData: [],
      headerObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      previewPath: "",
      preViewlogVisible: false,
    };
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
};
</script>

<style lang="less" scoped>
.preimg {
  width: 100%;
  height: 100%;
}
</style>>
